I cleaned my Mac keyboard a while back and I must've wiped any lubricant they used for the keys off because it always was a little sticky or catch when typing. So I pulled it apart and spent the next 1hr and 45min with a Q-Tip™ and some white lithium grease and gave each key and insert on the board a decent coating. Everything is back together and as I type this I have never felt such a soft, smooth response from a keyboard. Not only is it quiet as hell now and no clickity-clack, but the keys are a ton more responsive than they originally were. They barely need any pressure to respond. Go me.